[
Date Prev][
Date Next][
Thread Prev][
Thread Next][
Date Index][
Thread Index]
[
List Home]
|
Re: [platform-swt-dev] cannot append text in infinite loop
|
Hello Tom,
Display synExec did help solvin the problem...thanks for the help...
pravin
Tom Schindl-2 wrote:
>
> Hi,
>
> User questions should be asked at the eclipse.platform.swt newsgroup.
> The problem you are most likely facing is that you need to sync-back all
> UI-Calls from your Thread using Display#async/syncExec.
>
> Tom
>
> pravin.dhake schrieb:
>> Hello,
>>
>> I am new to swt and have been working on application which gathers string
>> from a jni call froma serial port and displays it on a text widget. the
>> code
>> is attached below
>>
>> Display display = new Display();
>> final Shell shell = new Shell(display,SWT.RESIZE);
>> shell.setSize(320, 240);
>> shell.setLayout(null);
>> Font font1 = new Font(display, "UTF-8", 5, SWT.NORMAL);
>> final Text text = new Text(shell,SWT.MULTI|SWT.WRAP|SWT.V_SCROLL);
>> text.setBounds(new Rectangle(3, 8, 308, 201));
>> text.setEditable(false);
>> text.setFont (font1);
>> text.append ("tags \n");//the text widget is able to display this
>>
>>
>>
>> while (true) {
>>
>> wait();
>> if (i==1) // the code waits in infinite loop polling for the flag to be
>> set
>> high
>> {
>>
>> System.out.print(s);
>> /*s is the string which gets updated . this command does print out the
>> string on console every time without any problem*/
>> System.out.println("\n");
>> text.append(s + "\n");
>> shell.pack();
>> shell.open();
>> shell.layout(true);
>> i=0;
>>
>> }
>>
>> }
>>
>> The above code runs as a thread. The first time the flag is set i can see
>> the string displayed on screen teh first time. but subsequent updates of
>> the
>> string fail. I am not sure if teh display hangs up after that. can anyone
>> tell me where i am going wrong
>
> _______________________________________________
> platform-swt-dev mailing list
> platform-swt-dev@xxxxxxxxxxx
> https://dev.eclipse.org/mailman/listinfo/platform-swt-dev
>
>
--
View this message in context: http://www.nabble.com/cannot-append-text-in-infinite-loop-tp15818289p15894526.html
Sent from the Eclipse Platform - swt mailing list archive at Nabble.com.
